257A Full-sized Surface Gage 51240

Starrett Surface Gages are designed for a wide variety of uses. This is a basic tool for machinists and toolmakers. The main uses are for accurately scribing lines, transferring measurements and for probing surfaces in inspection work. 9” Spindle.

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  • Finest full-size surface gage
  • Stable steel base is fully hardened, ground and nicely finished
  • Four frictionally held gage pins that add versatility for referencing the tool


  • Spindle Length (in): 9"
  • Spindle Length (mm): 225mm
  • Base Size (in): 2-7/8 x 2-3/8"
  • Base Size (mm): 72 x 60mm

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